Update setup.sh script

Update creating local configuration files
Update configuration

Add local/web, local/console and local/gearman configuration files to define locally applicable config options.
Update own version of Yii to merge configuration with local files.
Add comments in local config files.
Update catalogs structure, create "public" dir.

Create "public" dir alongside of "protected".
Moved folders and files into "public":
- dir /assets
- dir /images
- dir /static
- dir /theme
- favicon.ico
- index.php

Rename Yii submodule path from ".yii" to "yii".
Updated <.gitmodules>.

Update setup.sh script.
Updated WRITABLE_FOLDERS list.

Add new path alias: <logs>.
Updated own version of Yii.

Update ConsoleCommand to use new <logs> alias.
Also admin/DefaultController has been updated.

Update <gearman.php> init script to make it executable.